Jon, thanks very much. To the escalating violence in the middle east. Rockets falling on both sides of the border with the gaza strip and possibly ground invasion. Alex Marquardt is in gaza city for us this morning. Good morning, Alex. Reporter: Good morning, robin. The Israeli air force stepped up its air strikes overnight pummeling the gaza strip. The death toll here quickly growing with more than 800 Israeli strikes so far in this operation as hamas and other militant groups fire rockets further and farther into Israel. In gaza the ground shaking Israeli air strikes rained down with drones and jets targeting militants and rockets often destroys much more. So far, around 80 Palestinians killed. The vast majority civilians, this morning, eight members of a single family mistakenly killed. We've seen the destructive power of the strikes up close. Here the three-story family home of umsami now a pile of rubble. "There is no reason to attack my house" she told me angrily. "There are no militants here." Terrified civilians fleeing to shelters for cover. Over the past three days, more that 250 rockets and mortars have been fired from the gaza strip. Hamas now able to reach 100 miles away with its powerful arsenal. But so far, no Israelis have been seriously wounded. And Israeli military officials told me they've mobilized 20,000 reserve troops so far for a possible ground invasion that Israel's president says could come soon turning this no a much longer and bloodier conflict. Robin? Which is the great concern right now, Alex, thank you.

This transcript has been automatically generated and may not be 100% accurate.

Israel Hit by 150 Rockets Targeting 10 Cities

ABC News has misidentified a photo and has therefore removed the introduction to this story.

Israel Increase Airstrikes Against Hamas in Gaza Strip

Fighting escalates as Palestinian militants target further into Israel.

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